This natural formula effectively and quickly repels all types of Mite (including harvest mite), biting and sucking lice, midge, ticks and black flies for up to 24 hours. It can also be sprayed directly onto ticks and bot eggs to loosen and stop development naturally. Suitable for young, recovering, elderly animals including horses, dogs, cats and other small animals. Barrier Animal Healthcare use 100% natural plant-derived active ingredients, making all products effective and safe for animals and humans!